Replacing Batteries (Battery Powered Model Only)
When the battery is low, a yellow warning LED will begin to flash and an
audible alarm will sound every 300 seconds to alert that it is time to
change the battery. Using a large flat head screw driver, turn the battery
cover 1/4 turn in the direction of the arrows on the cover. Remove the
battery cover by lifting it up. Remove the coin cell battery from its
compartment. Insert a new 3V CR2450 coin cell battery in the
compartment with the positive (+) side of the battery facing up. Replace
the battery cover and twist the cover using the large flat head screw driver
in the opposite direction of the arrows on the cover.
Wiring
The wires in the 4.9 ft (1.5 m) cable for the Series WD3 are color coded
to reduce wiring errors. For battery powered models, Figure 2 has the
wiring diagram. For external powered models, Figure 3 has the wiring
diagram.
Operation
After mounting and wiring the Series WD3, it is ready for operation. The
water is detected when it bridges the two conducting strips on the bottom
of the unit. Upon detecting water, the relay contact will close and a red
LED will begin to flash. On models with the built in annunciator, the
annunciator will begin to chirp until the water bridge between the
conducting strips evaporates. After water evaporates, the relay contacts
will return to their normal state.
LED Indicators
For Model WD3-LP-D2 and WD3-LP-D2-A
Green – On when power is supplied to the unit
Red – On when water is detected
For Model WD3-BP-D1-A
Yellow – On when low battery condition is detected
Red – On when water is detected
MAINTENANCE/REPAIR
Upon final installation of the Series WD3 no routine maintenance is
required. The Series WD3 is not field serviceable with the exception of
replacing the batteries on battery powered model and should be returned
if repair is needed. Field repair should not be attempted and may void
warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sales” in our catalog and on our
website. Contact customer service to receive a Return Goods
Authorization number before shipping the product back for repair. Be
sure to include a brief description of the problem plus any additional
application notes.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000
www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Fax: 219/872-9057
e-mail: [email protected]
©Copyright 2013 Dwyer Instruments, Inc.
Printed in China 7/13
FR# R3-444159-00 Rev.1
Model
WD3-BP-D1-A
WD3-LP-D2
WD3-LP-D2-A
Output
SPST NO SSR
DPDT Relay
DPDT Relay
Power
Battery
11 to 27 VAC/DC
11 to 27 VAC/DC
Audible Alarm
Yes
No
Yes
Figure 2: Wiring for WD3-BP-D1-A
Figure 3: Wiring for WD3-LP-D2 and WD3-LP-D2-A
YELLOW
GREEN
YELLOW
WHITE
GREEN
BLUE
BROWN
RED
BLACK
ORANGE
PWR IN
